Cummins RS17A
Air-cooled · Natural Gas / LP Vapor
Ellis County · Texas
Generator installation in Midlothian, TX
A typical 20kW Cummins whole-house generator installed in Midlothian is estimated at $13,500–$17,000. Estimate only. Every installation is different; a site visit is required to determine whether your installation will cost less or more than this estimate. The RS20A unit alone is $5,925.25. We pull the Midlothian permit and meet the inspector. Electric delivery is HILCO Electric Cooperative serves the city per its own services page, with Oncor serving part of it — check your bill; natural gas is Atmos Energy.
Authorized Cummins dealer · TECL #40628 · our own electricians, no subcontracted electrical work
Midlothian at a glance
| County | Ellis County |
|---|---|
| Electric delivery | HILCO Electric Cooperative serves the city per its own services page, with Oncor serving part of it — check your bill |
| Natural gas | Atmos Energy |
| Permit office | Development Services, City Hall second floor, 215 N 8th Street |
| Typical 20kW installed | $13,500 – $17,000 Estimate only; installations vary, and a site visit determines your price. |
| Site survey | Free, about 45 minutes |
Permits and inspection in Midlothian
Permits go through Development Services, City Hall second floor, 215 N 8th Street.
Midlothian has no generator line in its Master Fee Schedule. Its electrical permit minimum fee is $50, and a permit that is required but not listed on the schedule is priced on the total valuation of the work.
Midlothian commits to a next-day inspection for any request filed online before 5pm. Nothing may be covered before it is inspected, gas and electrical included.
Source: City of Midlothian Master Fee Schedule, effective 09/22/2026 (RES 2026-68), checked 2026-10-09. Other cities side by side: generator permit fees by DFW city.
State law limits what Midlothian may require on a home system of 50kW or less, and a qualified third party may do the review and inspection instead: Texas Local Government Code § 229.102 and Texas Local Government Code § 247.0025. Your HOA cannot ban the generator either (Property Code § 202.019).
Already have a generator in Midlothian? Whole-house generator repair and service in Midlothian: who does Cummins warranty work and the Cummins service intervals.
Utilities that affect your install
Electric delivery in Midlothian is HILCO Electric Cooperative serves the city per its own services page, with Oncor serving part of it — check your bill. The boundary runs through neighborhoods, so two houses on one street can have different providers, and each approves a service-entrance tie-in its own way. Your bill shows which you have.
Natural gas is Atmos Energy. If the meter cannot carry the generator on top of the furnace, water heater and other appliances, the utility has to upsize it, which is a separate request with its own timeline. How gas line sizing works.
Already have solar? It has to connect on the utility side of the transfer switch so the generator never feeds the inverters, and the disconnect and meter rules come from HILCO Electric Cooperative or Oncor Electric Delivery, whichever serves your address. Why, and how the main DFW utilities handle it.
Who does the work
UTS ElectricPros is the authorized Cummins dealer. Installation is done by our own electricians working as Clements Electric, our dba, from 2100 S Great Southwest Pkwy, Suite 505, Grand Prairie, under TECL #40628. The installation process runs survey, written price, permit, install, inspection and commissioning under load.
Our installation crews work under the Clements Electric name, which also covers repairs, maintenance and other electrical work in Midlothian. Clements Electric standby generator installation and service in Midlothian.
Popular in Midlothian
Cummins RS20AC
Air-cooled · Natural Gas / LP Vapor
ATS included
Cummins RS13A
Air-cooled · Natural Gas / LP Vapor
Other Cummins equipment for Midlothian
Installed in Midlothian: Home standby generators · Light commercial diesel generators · Agricultural standby generators · Automatic transfer switches
Shipped to Midlothian, no installation needed: Portable generators · RV generators · Mobile trailer-mounted diesel generators
Generator questions from Midlothian homeowners
How much does a whole house generator cost in Midlothian?
A typical 20kW Cummins system installed in Midlothian is estimated at $13,500 to $17,000, including the pad, transfer switch, permit and commissioning, with the gas line included as its own line item. Estimate only. Every installation is different; a site visit is required to determine whether your installation will cost less or more than this estimate. The RS20A unit itself is $5,925.25. Your figure depends on the distance from the generator to the gas meter and the electrical panel and on whether the gas meter needs upsizing, so it is fixed in writing after a free survey.
Do I need a permit for a generator in Midlothian?
Yes. Permits go through Development Services, City Hall second floor, 215 N 8th Street. Midlothian has no generator line in its Master Fee Schedule. Its electrical permit minimum fee is $50, and a permit that is required but not listed on the schedule is priced on the total valuation of the work. We pull the permit and meet the inspector, and it is inside the installation quote.
Can Midlothian regulate my home generator install?
Only within limits. Texas Local Government Code § 229.102 bars a city from regulating the installation or inspection of a residential backup system of 50kW or less where the city does not own the electric utility. Since 2025, Texas Local Government Code § 247.0025 also lets a qualified third party do the plan review and inspection, and the city must then issue the permit by the third business day after notice.
Who provides gas and electric service in Midlothian?
Electric delivery is HILCO Electric Cooperative serves the city per its own services page, with Oncor serving part of it — check your bill. Natural gas is Atmos Energy. The electric utility sets how the transfer switch ties in at the meter; the gas utility decides whether your meter can carry the generator's extra demand. Service territory does not follow city limits, so we confirm both from your bill before quoting.
Who installs the generator in Midlothian?
Our own licensed electricians, working as Clements Electric, the dba of UTS ElectricPros, LLC, from 2100 S Great Southwest Pkwy, Suite 505, Grand Prairie, under TECL #40628. The gas line is run by a licensed plumber we hire and warrant, or by your own plumber if you prefer. UTS ElectricPros is the authorized Cummins dealer, so the same company sells, installs and handles the warranty.